# Structural properties and decay modes of Z $=$ 122, 120 and 118 superheavy nuclei

## TL;DR

This study investigates the structural properties and decay modes of superheavy nuclei with atomic numbers 118, 120, and 122 using a microscopic approach, predicting shapes, decay pathways, and unique charge density features.

## Contribution

It provides detailed predictions of structural properties, decay modes, and charge density features of superheavy nuclei, including the first prediction of bubble-like charge density structures in specific isotopes.

## Key findings

- Predicted equilibrium shapes and deformations of superheavy nuclei.
- Identified possible alpha decay chains and spontaneous fission modes.
- Discovered bubble-like charge density structures with significant depletion fractions.

## Abstract

Structural properties and the decay modes of the superheavy elements Z $=$ 122, 120, 118 are studied in a microscopic framework. We evaluate the binding energy, one- and two- proton and neutron separation energy, shell correction and density profile of even and odd isotopes of Z $=$ 122, 120, 118 (284 $\leq$ A $\leq$ 352) which show a reasonable match with FRDM results and the available experimental data. Equillibrium shape and deformation of the superheavy region are predicted. We investigate the possible decay modes of this region specifically $\alpha$-decay, spontaneous fission (SF) and the $\beta$-decay and evaluate the probable $\alpha$-decay chains. The phenomena of bubble like structure in the charge density is predicted in $^{330}$122, $^{292,328}$120 and $^{326}$118 with significant depletion fraction around 20-24$\%$ which increases with increasing Coulomb energy and diminishes with increasing isospin (N$-$Z) values exhibiting the fact that the coloumb forces are the main driving force in the central depletion in superheavy systems.